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Method and device for controlling battery heating

A battery heating and battery technology, used in temperature control, secondary batteries, program control in sequence/logic controllers, etc. Effect

Active Publication Date: 2010-12-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the above-mentioned shortcomings that the existing methods and devices for controlling battery heating cannot better protect the battery, and provide a method and device for controlling battery heating that can better protect the battery

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  • Method and device for controlling battery heating

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] First of all, it should be noted that in the present invention, the so-called "battery" includes not only a single battery cell, but also a battery pack composed of multiple battery cells. The various descriptions of "battery" are applicable to both single battery cells and battery packs. For example, for a single battery cell, the so-called "positive and negative poles of the battery" refers to the positive and negative poles of the battery cell, while for a battery pack, the so-called "positive and negative poles of the battery" refers to the positive and negative poles of the battery pack. positive and negative poles.

[0019] figure 1 It is a flowchart of a method for controlling battery heating according to the present invention, such as figure 1 As shown, the method for controlling battery heating provided by the present invention is generally divided i...

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Abstract

The invention provides a method and a device for controlling battery heating. The method comprises the following steps of: starting heating a battery when a condition of starting heating is met; and stopping heating the battery when a condition of stopping heating is met. The condition of stopping heating is one of the following conditions: the temperature of the battery reaches the temperature of stopping heating; the time of keeping a discharge current of the battery invariable reaches a set time length or the discharge current is reduced; and the heating time reaches the maximum heating time. The method and the device improve the condition of stopping heating. Compared with the single temperature-judging way for stopping heating in the prior art, the method has the advantage of controlling the battery heating according to various factors. Various factors such as temperature, discharge current and heating time are considered respectively, so that the method and the device can meet the requirements of the battery in actual environments, cannot damage the battery and can prolong the service life of the battery.

Description

technical field [0001] The invention relates to a method and a device for controlling the heating of a battery. Background technique [0002] At present, lithium batteries have become ideal power sources for portable electronic devices and electric vehicles. Considering that the car needs to drive under complex road conditions and environmental conditions, or some electronic equipment needs to be used in poor environmental conditions, the battery used as the power supply of electric vehicles or electronic equipment needs to adapt to these complex conditions, especially when electric When the vehicle or electronic equipment is in a low-temperature environment, the battery needs to have excellent low-temperature charge and discharge performance and high output and input power performance. [0003] Generally speaking, under low temperature conditions, during the charging process of lithium-ion batteries, the migration rate of lithium ions slows down, making it difficult to int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/50G05B19/04G05D23/20H01M10/615
CPCY02E60/10
Inventor 吴光麟刘进张浩沈晞
Owner BYD CO LTD
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